@misc{indiciae3dfac9372cb9,
  title = {Doughnut sign in subdural hematomas.},
  author = {W Holloway and T el-Gammal and W H Pool},
  year = {1972},
  url = {https://pubmed.ncbi.nlm.nih.gov/4537761/},
  note = {Source identifier: 4537761}
}